# include<stdio.h> int main(void) { int n,i,j,t,flag; scanf("%d",&n); double a[100][2],b[100][100],sum; for(i=0;i<n;++i) { flag = 0; for(j=0;j<2;++j) { scanf("%lf",&a[i][j]); } for(j=0;j<a[i][0];++j) { scanf("%lf",&b[i][j]); } for(j=0;j<a[i][0];++j) { for(t=j+1;t<a[i][0];++t) { sum = b[i][j] + b[i][t]; if(sum==a[i][1]) { flag = 1; } } } if(flag==1) { printf("YES\n"); } else { printf("NO\n"); } } return 0; } |
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